.content-section{
  background:url('../images/pro/pro_bgc.png') no-repeat center center;
  background-size: 100% 100%;
  width: 100%;
  height: 920px;
}
.pro-container{
  width: 100%;
  padding: 0 180px;
  box-sizing: border-box;
}

.pro-title-wrapper h3{
  font-size: 48px;
  font-weight: bold;
  text-align: center;
  padding-top: 154px;
  background-color:transparent;
  color: #ffffff;
}
.pro-title-wrapper .pro-sub-t {
  color: #ddd;
  text-align: center;
  font-size: 24px;
  margin-top: 10px;
}

.pro-content-item{
  display: flex;
  margin-top: 58px;
}

.pro-item{
  width: 373px;
  box-sizing: border-box;
  position: relative;
  transition: all 200;
  height: 506px;
}

.pro-item:hover{
  cursor: pointer;
}
.pro-b-a{
  display: block;
  color:#fff;
  margin:0 14px;
  text-align: center;
  font-size: 18px;
  line-height: 44px;
  border-radius: 18px;
  background-color: #5285bd;
  margin-top: 30px;
}
.pro-b-a-2{
  background-color: #479fcd;
}
.pro-b-a-3{
  background-color: #9072bd;
}
.pro-b-a-4{
  background-color: #5fd1b5;
}

.pro-itme-b-firstp{
  font-size: 36px;
}
.pro-itme-b-secp{
  font-size: 18px;
  margin-top: 10px;
}
.pos-itme-b{
color:#fff;
text-align: center;
}
.pro-item-1,.pro-item-wrap-1{
  background-color: #2766ac;
  color: #ffffff;
}
.pro-item-2{
  background-color: #1987c0;
}
.pro-item-3{
  background-color: #744fad;
}
.pro-item-4{
  background-color: #37c6a3;
}
.pro-item:hover .pro-item-b{
  height: 266px;
}
.pro-item-b{
  padding-bottom: 22px;
  padding-top: 50px;
  overflow: hidden;
  z-index: 999;
  position: absolute;
  width: 373px;
  left: 0;
  bottom: 0;
  height: 236px;
  box-sizing: border-box;
  transition: all .3s;
}

.pro-item-t{
  height: 270px;
  transition: all .3;
  z-index: 1;
  overflow: hidden;
  width: 100%;
}

.pro-item-t img{
  width: 100%;
  height: 100%;
}
.flex-wrap{
  display: flex;
  justify-content: space-between;
}

.item-a{
  display: block;
}
